613388801 has 4 divisors (see below), whose sum is σ = 620280900. Its totient is φ = 606496704.

The previous prime is 613388779. The next prime is 613388803. The reversal of 613388801 is 108883316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178249201 + 435139600 = 13351^2 + 20860^2 .

It is a cyclic number.

It is not a de Polignac number, because 613388801 - 2²² = 609194497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613388803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3445916 + ... + 3446093.

It is an arithmetic number, because the mean of its divisors is an integer number (155070225).

Almost surely, 2^613388801 is an apocalyptic number.

It is an amenable number.

613388801 is a deficient number, since it is larger than the sum of its proper divisors (6892099).

613388801 is an equidigital number, since it uses as much as digits as its factorization.

613388801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6892098.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 613388801 is about 24766.6873239035. The cubic root of 613388801 is about 849.6602106687.

The spelling of 613388801 in words is "six hundred thirteen million, three hundred eighty-eight thousand, eight hundred one".